Investigating vehicle emissions at traffic light juction: case study at Parit Buntar intersection

Wan Hashim Wan Ibrahim, . and Norazam Ramli, . (2003) Investigating vehicle emissions at traffic light juction: case study at Parit Buntar intersection. [Proceedings Paper]

Air pollution due to transportation especially in urban areas is the result of the discharge of unburnt and partially burnt engine fuels together with the by-products of complete combustion. The major components of air pollution due to transportation are carbon monoxide CO nitrous oxides NOx and hysdrocarbon HC. The concentration and relative mixtures of these pollutants depends on vehicle speed acceleration deceleration the amount of time vehicles spent idling stopping and waiting especially at major junction in urban areas. However due to an increase in traffic volume improper junction geometry improper signal phasing and also due to inadequate signal timing motorists are spending substantial amount of their time idling and waiting at the junction. Traffic light junctions that are designed according to proper standards will minimise delay and thus reduce the amount of pollutants emitted from idling vehicles. In this paper the effects of traffic light junctions configuration and number of vehicles on the amount of pollutants emitted are investigated using SIDRA. A case study of one traffic light junction in Parit Buntar Perak will be investigated. In this paper improvements to the junction in term of providing proper signal timing signal phasing and minor geometrical modifications are proposed. The relative change in the amount of pollutants emitted by vehicles as the results of the improvements in the design of traffic light junctions are highlighted.

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Abstract

Air pollution due to transportation especially in urban areas is the result of the discharge of unburnt and partially burnt engine fuels together with the by-products of complete combustion. The major components of air pollution due to transportation are carbon monoxide CO nitrous oxides NOx and hysdrocarbon HC. The concentration and relative mixtures of these pollutants depends on vehicle speed acceleration deceleration the amount of time vehicles spent idling stopping and waiting especially at major junction in urban areas. However due to an increase in traffic volume improper junction geometry improper signal phasing and also due to inadequate signal timing motorists are spending substantial amount of their time idling and waiting at the junction. Traffic light junctions that are designed according to proper standards will minimise delay and thus reduce the amount of pollutants emitted from idling vehicles. In this paper the effects of traffic light junctions configuration and number of vehicles on the amount of pollutants emitted are investigated using SIDRA. A case study of one traffic light junction in Parit Buntar Perak will be investigated. In this paper improvements to the junction in term of providing proper signal timing signal phasing and minor geometrical modifications are proposed. The relative change in the amount of pollutants emitted by vehicles as the results of the improvements in the design of traffic light junctions are highlighted.

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Item Type:	Proceedings Paper
Additional Information:	Summary En
AGROVOC Term:	POLLUTION
AGROVOC Term:	AIR POLLUTION
AGROVOC Term:	ROAD TRANSPORT
AGROVOC Term:	URBAN AREAS
AGROVOC Term:	GASES
AGROVOC Term:	CARBON MONOXIDE
AGROVOC Term:	NITROUS OXIDE
AGROVOC Term:	HYDROCARBONS
AGROVOC Term:	RESEARCH
AGROVOC Term:	STATISTICAL METHODS
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16272

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